GRETA H BOYNTON M.D.
NPI 1801854773
Internal Medicine in Springfield, MA
About Greta H Boynton M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETA H BOYNTON M.D. (NPI 1801854773) is an individual internal medicine provider in Springfield, Massachusetts, licensed in Massachusetts (218510) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Baystate Wing Hospital, and is a graduate of University Of Massachusetts Medical School (2000).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Greta H Boynton M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Greta Boynton reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Springfield, MA 01199
- Reassigned Medicare billing, Massachusetts enrollment
- 1,537 clinicians in this Medicare group
Holyoke, MA 01040
- Reassigned Medicare billing, Massachusetts enrollment
- 337 clinicians in this Medicare group
Stafford Springs, CT 06076
- Reassigned Medicare billing, Connecticut enrollment
- 112 clinicians in this Medicare group
Manchester, CT 06040
- Reassigned Medicare billing, Connecticut enrollment
- 130 clinicians in this Medicare group
Manchester, CT 06040
- Reassigned Medicare billing, Connecticut enrollment
- 422 clinicians in this Medicare group
Waterbury, CT 06708
- Reassigned Medicare billing, Connecticut enrollment
- 152 clinicians in this Medicare group
Brockton, MA 02301
- Reassigned Medicare billing, Connecticut and Massachusetts enrollments
- 34 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baystate Wing Hospital
Acute Care Hospitals · Palmer, MABerkshire Medical Center
Acute Care Hospitals · Pittsfield, MABaystate Noble Hospital
Acute Care Hospitals · Westfield, MABaystate Medical Center
Acute Care Hospitals · Springfield, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01107 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SPRINGFIELD, MA 01107
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Greta Boynton's NPI number?
The NPI number for Greta Boynton is 1801854773. It was assigned to this individual provider in the NPPES registry on May 2, 2006.
Where is Greta Boynton located?
Greta Boynton practices at 759 Chestnut St, Springfield, MA 01107. The listed phone number is (413) 794-4320.
What is Greta Boynton's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Greta Boynton enrolled in Medicare?
Yes. Greta Boynton is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Greta Boynton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Greta Boynton reassigns Medicare benefits to 7 organizations: Baystate Medical Practices, Inc (Springfield, MA), Sound Physicians Of Massachusetts, Inc (Holyoke, MA), Galen Inpatient Physicians PC (Stafford Springs, CT), Hospitalist Medicine Physicians Of Connecticut, LLC (Manchester, CT), Prospect Ct Medical Foundation, Inc. (Manchester, CT) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Greta Boynton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Greta Boynton accept?
Health plans from Taro Health list Greta Boynton as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Greta Boynton affiliated with any hospitals?
According to CMS data, Greta Boynton is affiliated with Baystate Wing Hospital, Berkshire Medical Center, Baystate Noble Hospital and Baystate Medical Center.
When was this NPI record last updated?
The NPPES record for Greta Boynton was last updated on March 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Greta H Boynton, M.D. · NPI 1801854773
Internal Medicine physician in Springfield, Massachusetts. Individual provider, active in the CMS NPPES registry since May 2, 2006.
## Identity
- **NPI:** 1801854773 (Entity type: Individual)
- **Enumerated:** May 2, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 218510 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 759 CHESTNUT ST, Springfield, MA 01107-1619
- **Phone:** (413) 794-4320 · **Fax:** (413) 794-1767
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Baystate Medical Practices, Inc (NPI 1548205909, Springfield, MA); Sound Physicians Of Massachusetts, Inc (NPI 1184178386, Holyoke, MA); Galen Inpatient Physicians PC (NPI 1164227690, Stafford Springs, CT); Hospitalist Medicine Physicians Of Connecticut, LLC (NPI 1558696153, Manchester, CT); Prospect Ct Medical Foundation, Inc. (NPI 1144677568, Manchester, CT); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Massachusetts Medical School, class of 2000
## Record status
- **NPPES last updated:** March 26, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1801854773) · Data from the CMS NPPES public registry.